Full Report
View CSAF 1. EXECUTIVE SUMMARY CVSS v3 7.8 ATTENTION: Low attack complexity Vendor: Santesoft Equipment: Sante FFT Imaging Vulnerability: Out-of-Bounds Read 2. RISK EVALUATION Successful exploitation of this vulnerability could allow an attacker to disclose information and execute arbitrary code. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following Santesof products are affected: Sante FFT Imaging: Versions v1.4.0 and prior 3.2 Vulnerability Overview 3.2.1 OUT-OF-BOUNDS READ CWE-125 The affected application lacks proper validation of user-supplied data when parsing DICOM files. This could lead to an out-of-bounds read. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process. CVE-2023-5059 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). 3.3 BACKGROUND CRITICAL INFRASTRUCTURE SECTORS: Healthcare and Public Health COUNTRIES/AREAS DEPLOYED: Worldwide COMPANY HEADQUARTERS LOCATION: Cyprus 3.4 RESEARCHER Michael Heinzl reported this vulnerability to CISA. 4. MITIGATIONS Santesoft has released an updated version of their product and recommends users update to Sante FFT Imaging to v1.4.1. CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as: Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolating them from business networks. When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies. CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies. Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents. No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability is not exploitable remotely. 5. UPDATE HISTORY October 12, 2023: Initial Publication
Analysis Summary
# Vulnerability: Out-of-Bounds Read in Sante FFT Imaging Leading to Code Execution
## CVE Details
- CVE ID: CVE-2023-5059
- CVSS Score: 7.8 (High)
- CWE: CWE-125 (Out-of-Bounds Read)
## Affected Systems
- Products: Sante FFT Imaging
- Versions: v1.4.0 and prior
- Configurations: Vulnerable when parsing DICOM files supplied by a user.
## Vulnerability Description
The Sante FFT Imaging application suffers from an Out-of-Bounds Read vulnerability (CWE-125) due to insufficient validation of user-supplied data when processing DICOM files. Successful exploitation allows an attacker to read memory outside of the allocated buffer, which could potentially lead to arbitrary code execution within the context of the affected process.
## Exploitation
- Status: No known public exploitation specifically targeting this vulnerability targeting the vendor has been reported to CISA at this time.
- Complexity: Low (Based on the CVSS vector's AC:L)
- Attack Vector: Local (The advisory notes the vulnerability is "not exploitable remotely," implying a local attacker or user interaction is required, consistent with the required User Interaction (UI:R) in the vector).
## Impact
- Confidentiality: High (Potential disclosure of information)
- Integrity: High (Successful arbitrary code execution impacts integrity)
- Availability: High (Successful arbitrary code execution impacts availability)
## Remediation
### Patches
- Sante FFT Imaging version v1.4.1 (or newer)
### Workarounds
CISA recommends defensive measures to minimize risk, though these are general ICS recommendations rather than specific technical workarounds for this flaw:
1. Minimize network exposure for all control system devices, ensuring they are not accessible from the internet.
2. Locate control system networks behind firewalls and isolate them from business networks.
3. Use secure methods like up-to-date Virtual Private Networks (VPNs) for required remote access.
## Detection
- Indicators of compromise (IOCs) are not specifically detailed, but look for unusual process behavior or file parsing errors related to DICOM files.
- No specific detection methods were listed, but general ICS monitoring should be employed alongside endpoint protection to monitor for anomalous execution paths following file handling. Organizations should report suspected malicious activity to CISA.
## References
- Vendor advisory (Implied via patch availability at hxxps://santesoft.com/win/sante-fft-imaging/download.html)
- CISA Advisory (Implied from context based on CSAF structure)